106 BLUE-THROATED HUMMING-BIRD. 



From some allied species Mr Swainson has form- 

 ed his group Cynanthus, but places this at the end 

 as an abberrant species, from the curvature of the 

 bill. This will stand as one of the five great divi- 

 sions into which he would distribute the whole of 

 the Trochilidese. 



